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Cisplatin Life Styles With The Way Too Rich And / or Well-Known

Following an intratesticular injection of zinc gluconate, spermatogenesis was suppressed (azoospermia) in 91% (10/11) of toms on day 60 (the remaining cat had a reduced total sperm count and motility) and in 73% (8/11) on day 120 with the other two toms showing necrospermia or poor semen quality (Oliveira et?al. 2013). Furthermore, testicular size was significantly decreased, and penile spines were either decreased (55% on day 120) or absent (36% on day 120) (Oliveira et?al. 2013). Although plasma testosterone concentrations were not significantly different from untreated controls, apparent effects on behaviour (e.g. reduced urine marking, vocalizing, fighting with other cats) were observed (Oliveira et?al. 2013). In contrast, a single injection click here of 20% calcium chloride resulted in significant dose-dependent degenerative changes of the testicular tissue. Coagulative necrosis, fibrosis, hyalinization and disintegration of germ cell association within the tubules and a complete loss of germ cells were observed (Jana and Samanta 2011). Furthermore, interstitial Leydig cells were degenerated, and, as a consequence, steroidogenesis was disrupted, resulting in low serum testosterone concentrations (Jana and Samanta 2011). According to the current state of the art, intratesticular injections can be considered an interesting treatment option. They induce delayed (for 4�C6?weeks), but prolonged (or permanent?) infertility in adult male toms with (calcium chloride) or without (zinc gluconate) INPP5D permanent reduction in peripheral testosterone concentrations and all related conditions without anaesthesia, need for sterile conditions and recovery care (Jana and Samanta 2011; Oliveira et?al. 2013). Classical targets for immunocontraception are GnRH, the GnRH receptor, LH, FSH and their receptors as they can be used theoretically in males and females (for review see Munks 2012). In females, the use of zona pellucida (ZP) proteins has also been described for immunological suppression of oestrus (Levy 2011; Munks 2012). None of these vaccines have been successfully developed or commercialized. In lieu of a permanent non-surgical sterilant, which is not yet available or near on the horizon, the ideal contraceptive for feral/free-roaming cats would be a single application of a drug resulting in a long-term contraception without side effects. Recently, GnRH-immunocontraception showed some success (Levy 2011). Following a single injection of GonaCon? (USDA, Pacarello, ID, USA), a specific GnRH vaccine, 93% of the vaccinated cats remained infertile for the first year following vaccination, 73% for the second year, 53% for the third year and 40% for 4?years (Levy et?al. 2011). Furthermore, the time to conception was significantly higher in treated animals (39.7 vs. 4.4?months, p?<?0.001) (Levy et?al. 2011).</div>
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